4-in-1 RC Robot Kit for Kids and Adults – STEM Toy Making Set, Building Blocks, No Soldering Required – Model SM1702 – Tank, Race Car, Six-Legged Bug and Knight on a Horse (Medium to Hard Difficulty)

DESIGN & QUALITY: Built to last, the Brain Crunch Smart Machines construction kits allows you to build your own motorized vehicles and machines and control them with the included infrared remote. Kit includes a full color instruction manual with diagrams to build 4 models of varying difficulty. Comes in portable storage box. For ages 8+
UNLEASH YOUR CREATIVITY: After you’ve built the models in the instruction manual, you’ll be well-trained to create your own motorized machines with the reusable modules.
PLAYTIME VALUE: Each model included take anywhere from 30 to 150 minutes to complete, depending on the difficulty level and the age of the child. Other kits claim to have 10 or more models but they take 5-10 minutes to build. If you are looking for longer lay time, this is exactly what you need!3